help in completing a method

[glitchy]

Hey all, need help in a question

Complete the method below that is passed two strings, a name of a file and a target line. This method returns true if the file contains at least one line that matches the target line, and false otherwise. Note your method must include code to properly do the steps needed for file input.

public boolean containsLine (String filename, String target) {

any ideas?

[JosAH]

@glitchy
Yes: read the very first article in this forum group; it contains a link that allows you to download the entire API documentation. Download it and start reading about BufferedReaders, FileInputStreams and the String class. They have all the methods you need.

kind regards,

Jos

[glitchy]

something like this?

public boolean containsLine (String filename, String target) {
try {
BufferedReader in = new BufferedReader(new FileReader(filename));
String line = null;
while((line = in.readLine()) != null) {
if(target.equals(line))return true;
}
}catch(IOException e){}
return false;
}
 

[JosAH]

Yep, sort of; you only forgot to close your file when you're done with it; nothing a small finally { ... } block can't cure.

kind regards,

Jos